Somewhere there's a facility with 30 seats and the same problem and they're getting fed-up. I'm not saying that's true but this is a serious problem with the App Store (assuming you're experiencing that specific problem) that Apple has to fix for the App Store to be a viable distribution model.

10.0.4 is bug fixes much like 10.0.2 was.
So it seems a pattern is being established between bug fix and feature releases in alternating 12 week intervals (give or take). So I guess the next feature release is July.

I thought about that too. It seems one of the bug fixes improves Broadcast Monitoring.
I think when push came to shove, if they couldn't get a new feature out and stable, they went for things that would be important for the tech product displays like the video i/o boxes.
It seems they fixed some responsiveness and multicam issues.
It really looks almost like this is the NAB presentation fix for those few showing their stuff working with FCPX.

Assigns default audio channel setting for new projects to stereo.
Includes multicam metadata in XML project export.
Fixes an issue in which video superimposed over a background with an alpha channel could appear differently in Viewer before and after render.
Fixes an issue that caused some titles to be rendered again after each application launch.